Ecp Mode - Epson Stylus Pro 7600 Service Manual

EPSON Stylus Pro 7600/9600

1.6.1.3 ECP Mode

SPECIFICATION
Transmission mode: IEEE-1284ECP mode
Synchronization: IEEE-1284 specification
Handshaking: IEEE-1284 specification
Signal level: TTL compatible (IEEE1284Level 1 device)
Data trans. timing: IEEE-1284 specification
Extensibility Request:
The printer responds affirmatively when the extensibility request values are 10H
or 04H, that mean,
10H Request ECP Mode Reverse Channel Transfer.
14H Request Device ID; Return Data Using ECP Mode Rev Channel
Transfer.
Device ID:
When IEEE1284.4 is valid
• <xx><xx>
(Character strings, depending on <Model Name>)
• MFG: EPSON;
• CMD: ESCPL2,BDC,D4;
• MDL: <Stylus Pro 7600-DYE/Stylus Pro 9600-DYE> ;
• CLS: PRINTER;
• DES: EPSON<SP>T<Stylus Pro 7600-DYE/Stylus Pro 9600-DYE>;(<SP>:
space)
When IEEE1284.4 is not valid
<xx><xx>
•
(Character strings, depending on <Model Name>)
MFG: EPSON;
•
CMD: ESCPL2,BDC;
•
MDL: <Stylus Pro 7600-DYE/Stylus Pro 9600-DYE>;
•
CLS: PRINTER;
•
DES: EPSON<SP>T<Stylus Pro 7600-DYE/Stylus Pro 9600-DYE>;
•
(<SP>: space)
Product Description
CONNECTOR PIN ASSIGNMENT AND SIGNALS
Table 1-56. Connector Pin Assignment and Signals (ECP)
Pin Return
Signal Name
No. GND Pin
1 19 HostClk
2 20 DATA0
3 21 DATA1
4 22 DATA2
5 23 DATA3
6 24 DATA4
7 25 DATA5
8 26 DATA6
9 27 DATA7
10 28 PeriphClk
11 29 PeriphAck
12 28 nAckReverse
13 28 Xflag
14 30 HostAck
31 30 nReverseRequest
32 29 nPeriphReques
36 30 1284-Active
18 -- PeriphLogic
35 -- +5V
17 -- Chassis GND
16,33
-- GND
19-30
15,34 -- NC
Note "*": In/Out refers to the direction of signal flow from the printer's point of view.
Interfaces
In/Out* Function
Data or address information are transferred from a host to a
In
printer.
In
In
In
The DATA0 through DATA7 signals represent data bits 0
In
to 7, respectively. Each signal is at high level when data is
In
logical 1 and low level when data is logical 0.
In
In
In
Out Data is transferred from a printer to a host.
A printer uses this signal for a flow control of forward
direction. Also this signal offers the data bit 9 that use it to
Out judge whether or not it is information command
information or data to be output on the data signal of
reverse direction.
Out A printer does drive to Low and approve nReverseRequest.
Out X-flag signal and reverse channel transfer data bit 1 or 5.
A host uses this signal for a flow control of reverse
direction. Also this signal offers the data bit 9 that use it to
In judge whether or not it is information command
information or data to be output on the data signal of
forward direction.
This signal is made a low, to change a channel toward
In
reverse.
Out This signal uses to produce a host interrupt.
In 1284 active signal. "HIGH" in ECP mode
Out Always "HIGH". Pulled up to +5 V via 3.9 K ohm resistor.
Out Always "HIGH". Pulled up to +5 V via 1.0 K ohm resistor.
-- Chassis GND.
-- Signal GND.
-- Not connected.
Revision A
94